Home / 15,839.50-21,858.51-8,767

Finding the Fourth Proportional to 15,839.50, 21,858.51 and 8,767

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Solution

The fourth proportional to 15,839.50, 21,858.51 and 8,767 is: 12,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,839.50 : 21,858.51 = 8,767 : x
  2. Step 2: Convert to fraction form
    15,839.50/21,858.51 = 8,767/x
  3. Step 3: Cross multiply
    15,839.50x = 21,858.51 × 8,767
  4. Step 4: Simplify right side
    15,839.50x = 191,633,557.17
  5. Step 5: Solve for x
    x = 191,633,557.17/15,839.50
  6. Step 6: Final answer
    x = 12,098.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.